Steam coming from the 2th, 3th and the 5th water cooling towers of Carmel hospital

Steam coming from the 2th, 3th and the 5th water cooling towers of Carmel hospital

I was at Tuesday 4.12.2018, noted that steam coming from three water cooling towers. Considering that only the 2th one operating at low speed and the 3th and the 5th don't works at all, I don't know why the steam would come also from the non working cooling towers.
These cooling towers are used for HVAC.